Function Test; Support And Troubleshooting - HP M27 Maintenance And Service Manual

3) Lift the CN502 connector from the PCB.
4) Place the new component on the PCB. Be sure that it matches the PCB footprint.
5) Solder the new component.

Function test

Table 4-1: Function test
Test item
HDMI test
DP test
Audio test

Support and troubleshooting

The following table lists possible problems, the possible cause or each problem, and the recommended solutions.
Tab le 4-2: Solving common problems
Pro b lem
Screen is blank or
video is flashing.
Operating description
Confirm whether image displays and sound
plays correctly on the monitor
Confirm whether image displays and sound plays
correctly on the monitor
Change volume and balance to confirm whether
volume is smooth and loud enough
Po ssible cause
Power cord is disconnected.
Monitor is off.
Video cable is improperly connected.
System is in Sleep mode.
Tool used
Computer or DVD player
Computer or DVD player
Speaker
So lution
Connect the power cord.
Power the power button.
NOTE: If pressing the Power
button has no effect, press and
hold the power button for 10
seconds to disable the Power
button lockout feature.
Connect the video cable
properly.
Press any key on the keyboard
or move the mouse to exit
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